Operating Instructions
Becker Avionics
4
VHF Transceiver 0638.420-071 Issue 06 02/2021
Some figures in this manual are for basic understanding and can be different to the
design. Device design depends on variant.
Figure 1: Type plate (example) ............................................................................... 11
List of Abbreviations
AC
Alternating Current
AF
Audio Frequency
AR
Airborne Radio
ATT
Attenuation
AUX
Auxiliary
CBIT
Continuous Built-In Test
CFG
Configuration
CH
Channel
CM
Chassis Module
COM
Communication
DC
Direct Current
IC
Intercom
LCD
Liquid Crystal Display
PBIT
Power-On Built In Test
PTT
Push To Talk
RCU
Remote Control Unit
RSSI
Received Signal Strength Indication
RT
Remote Transceiver
RX
Receive
SQL
Squelch
SW
Software
TX
Transmit
VOX
Voice Operated IC Threshold
VHF
Very High Frequency